Flexible lens shade



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2% v 4ze. l5 2 I SJ z tI a ilyifl l |2 l5 @Ml/ffl Obert 5 Kem PatentedApr. 16, 1940 FLEXIBLE- LENS SHADE Robert S. Kemp, Alhambra, Calif.Application August 12, 1938, Serial No. 224,515

2 Claims.

This invention relates to improvements in sun shades for the lens ofvarious types of cameras.

The general object of this invention is to prol vide an improvedl lensshade which includes means for supporting a filter in front of thecamera lens.

Another object of the invention is to provide a lens shade which is madeof a iiexible material. A further object of the invention is to providea lens shade made of flexible material which includes means forsupporting filters of different slzes.

Other objects and the advantages of this invention will be apparent fromthe following description taken in connection with the accompanyingdrawing, wherein:

Fig. 1 is a perspective view of a camera showing my improved lens shademounted thereon; Fig. 2 is an enlargedcentral section through myimproved lens shade;

Fig. 3 is a rear end View in Fig. 2; l

Fig. 4 is an enlarged fragmentary section of the lens shade;

Fig. 5 is a side elevation of the lens shade partly in section showingit mounted on the lens barrel of a camera and showing a filteroperatively mounted in the shade; and

Fig. 6 is a section through the shade showing all it operatively mountedon the lens barrel of a camera with a large filter operatively mountedin the shade.

Referring to the drawing by reference characters I have illustrated mylens shade as emof the device shown 85 bodied in a device which isindicated generally at I0. The lens shade I0 is preferably made of agood grade of fiexible rubber and includes a cylindrical rear portion I2 from which aforwardly enlarging frusto-conical portion I3 ex-- tends.

The forward portion of the conical portion I3.

which is integral with the portion I2 preferably has an externalstrengthening bead I4 thereon and intermediate the bead III and thejuncture of the cylindrical portion and the conical portion I provide aplurality of similar reduced beads I5. The portion I2 has a cylindricalaperture I6 therein and the conical portion I3 has a conical aperture I1therein communicating with the aperture I6.` At the juncture of theapertures I 6 and I I I provide an inwardly .extending annular fiangeportion I8 the rear face of which is plane to form a flat shoulder I9andthe forward faceof which is preferably bevelled as indicated deviceoperatively mounted in the shade.

In the portion I2 intermediate the rear face thereof and the flange I8 Iprovide an inwardly extending, annular flange portion 2| both faces ofwhich are preferably bevelled. The space between the flange I 8 and thefiange 2| forms a d filter receiving chamber which is indicated at 22.

Within the conical aperture Il I provide a plurality of spaced inwardlyextending annular flanges or ribs 23 both faces of which are bevelled tointersect'as clearly shown in Fig. 4. i0

When the lens shade I 0 is to be used in conjunction with a camera suchas the camera' 25 shown in Fig. 1 the resilient portion I2 of the shadeis placed over the lens frame 26 of the camera with the lens framepositioned in the 15 aperture IB and the -end thereof engaging thefiange 2| as clearly shown in Fig. 5.

In Fig. 5 I have shown a glass and gelatin type color filter 2'! of thecorrect size for use with this the color filter 2l is'to be used it ispositioned in the chamber 22 before the lens shade is placed on thecamera lens frame. The correct size color filter is approximately thesame diameter or slightly lar-ger than the diameter of the aperture 25I6 and is securely held by the flange 2l ydue to the resiliency o f therubber of which the device is made.

In Fig. 6 I have shown a solid glass color filter 28 which is of toolarge a diameter to be posi- 80 tioned in the lens shade I 0. When afilter such as the color filter 28 is used it is inserted in the conicalaperture I'I and firmly pressed therein Auntil it is firmly gripped bythe ribs 23 as clearly shown in Fig. 6. The sharp inner edges of theribs 26 provide a rough surface engaging the periphery of the filter andpreventing accidental shifting of thefllter. v

Thus it will be ,apparent4 that my improved device I0 not only functionsas a shading device n for the lens of a camera but also acts as a filterholder not only for the correct size adapted for use with the device butalso as a, holder for numerous sizes of over size filters. Furthermoredue to the softness, resiliency and flexibility of the material of whichmy lens shade is made it does not injure or strain a color filter usedtherewith.

From the foregoing description it will be apparent that I have provideda novel lens shade 50 for the lenses of cameras which is simple inconstruction and highly efficient in use.

Having-thus described my invention, I claim:

1. A camera lens shade comprising a one .piece body portion formed offiexible and resilient ma- Il When 20 2 A aromas 'teriaL said bodyincludingA an open vended cylindrical portion and a truste-conicalportion extending therefrom, said body including an inl. lbody portionformed of rubber and including .a

resilient cylindrical portion adapted to engage a lens barrel and afrusto-conical portion extending from one end thereof, said body havingan inwardly extending resilient flange adjacent the :lunctureof saidcylindrical and conical portions, said body also having an inwardlyextending resilient flange intermediate said first flange and the otherend of said cylindrical'portion, said first flange being wider than thesecond flange, said conical portion on the inner surface thereofincluding a plurality of axiallyspaced annular ribs. 1

ROBERT s.y KEMP.

